Armed with these two paths we can create a batch file that pre-jits each of our application assemblies (after a .NET Core publish), along the following lines:

// for each file… <<path to crossgen.exe>> -JITPath <<path to clrjit.dll>> /in "<<path to assembly>>" /out <<path to assembly with .ni(.dll|.exe) suffix>> /Platform_Assemblies_Paths <<path to folder that the application was published to>>